Ssd1327 does not work with lvgl

Hi guys! (and maybe ladies?)
I am a bit new, please advise. I’ve bought a ssd1327 display to play with, and cannot get it working with lvgl. Like, this works, i see the text on the screen:

display:
  - platform: ssd1327_i2c
    model: "SSD1327 128x128"
    address: 0x3C
    id: main_display
    auto_clear_enabled: false
    update_interval: 20ms
    lambda: |-
      it.print(0, 0, id(font_narrow), "Hello World!");

but this does not, just an empty black screen:

display:
  - platform: ssd1327_i2c
    model: "SSD1327 128x128"
    address: 0x3C
    id: main_display
    auto_clear_enabled: false
    update_interval: 20ms

lvgl:
  displays: main_display
  full_refresh: false
  buffer_size: 100%
  # draw_rounding: 1
  bg_color: 0x000000
  text_color: 0xFFFFFF
  widgets:
    - label:
        text: "Test"
        width: 100%
        height: size_content
        align: center
        text_align: center
        text_font: font_narrow
        long_mode: wrap

Just updated to 2026.8.0, still the same. tried all advises from llms - nothing. Please help.

What’s the outcome with basic example?

lvgl:
  displays:
    - main_display
  pages:
    - id: main_page
      widgets:
        - label:
            align: CENTER
            text: 'Hello World!'

the same - black screen